Pressure-fuse for projectiles, mines, torpedoes, &amp;c.



Pateutefl 003.29, 1912.

E. SOKOLGWSKI. PRESSURE FUSE FOR RROJEOTIL'ES, MINES, TORP-BDOES, 6m.

APPLICATION I'ILIII) 0012-3, 1911.

FIG l.

' of a plate comprising a rimd, inwardly pro- UNITED STATES PATENT enrich.-

ERNST SOKOLOWSKI, or HAMBURG, GERMANY, assienon T0 E. Ifnu PONT De 'NEMOURS POWDER COMPANY, or WILMINGTON, DELAWARE, A ooReoRArIoN or Ew JERSEY.

PRESSURE-FUSE FOR PROJECTILES, MINES, TORPEIDOES, &-o.

Specification of Letters Patent.

Patented Oct. 29, 1912.

Application filed October 3, 1911. Serial 1%. 652,479.

of this specification.

The objectof my invention is'to provide an igniter having the advantage, as compared with-known igniters, of small dimen sions, inexpensive preparation and sure action.

In the d awing, which shows an embodiment of my invention applied to a pro ectile: Figure 1 is a longitudinal section.

through the point of a projectile equipped with my improved. igniter; Figs. 2 and a are details of the igniter.

The point 79 of the 'piojectile is recessed and threaded toweceive the threaded body a,

in which is embedded a match head or ful minate b. A primer, composed preferably jectin'g arms 0 and bent pins f having points resting againstthe fulminate b, is inserted within thebody-a. i

The primer member, which may be of sheet steel or new silver, may beformed in different ways. For example, it may be first shaped out of a flat disk in such man ner that a center piece holding together the arms 0 and 7 remains. A cup profile, as shown in Fig! 2, may then be given to the member/ The center piece may then be filed aw'ayon the lower side so as to leave a central openin The arms 0 are then pressed fiat so that, when the, primer member is' applied to the face of the body a, said arms will overlie the fulminate 7). The pins f are allowed to retain their hook-shaped form and their ends are ground to a tine point.

\Vit-hin the body it is screwed a piece 1 shaped as a ring, which holds the primer member inposition. Before the ring 9 is screwed into the body a, a pressure piece 72 is screwedwithin the: ring.

threaded part when the projectile strikes.

By means of graining, the parts g and it shall act upon the match heath 'ters Patent, is 1 ing piece.

The thread connecting the pressure piece I] and ring 5 over the fiiln1inate,'anda pressure piece inmay protected against moving in the threads. When the projectile strikes, thus shearing oil the threaded part of pressure pieceia, the latter presses the pins f into the fulminate Z) and the projectile detonates. co

Projectiles, mines, or torpedoes equipped with my improved pres sure fuse may be transported with a satisfactory degree of safety. The safety in transportation may be rendered absolute by providing the pro-v ectile, mine or torpedo with a protecting cover. The hook-shaped pins do not form. merely a passive resistance piece, but are active by means of a special resistance piece, placed. in bearings independent of the latter; and being; provided with a special appliance insuring safety during transportation. Y

Another featureof the invention is that several pins are placed in front of one and the same match head in such manner that a slanting pressure upon the pressure piece, even tho'ugh the fuse is bent as a result of such pressure, insures that at least one pin Having now fully described my invention. what I claim and desire to protect by Let- 1. A, pressure fuse for projectiles, mines, torpedoes, etc.,' comprising a body, a t'nhninate' Carried .thereby, a priming member overlying said fulminate and providedwith. pins extending toward said fulminate, a holding'piece screwedinto said body and confining the primer member in the stated position, and a pressure piece in front of the central part of said primer member having a rupturable connection with said hold- 1-2. A pressure fuse for projectiles, mines, torpedoes, etc, comprising a cup-shaped body having an outer thread and an inner- ,thread, a fulminateoarried centrally in the base of thebody, a primer member composed of a rim,- inwardly extending arms. and. 00 hook-shaped pins, a holding ring having an outer thread engaging the inner thread of the body and confining the primer member against the base of the body and. said arms serted within the ring having a ruptiu'able connection therewith and engaging said pins.

3. A pressure fuse for projectiles, mines, torpedoes, etc, compri mg a body: a primer 116 aember consisting of a rim, inwardly exie-nding arms and inwardly extending hookshaped pins, and a pressure piece normally held Within the body in position in front or said pins, but adapted, under a given force, to move forwardly within the bod v and actuate said pins.

4. A pressure fuse for projectiles, mines, torpedoes, etc., comprising a cup-shaped body having an inner thread, a-tuhninate carried in the baseot' the body, a primer member Within the body in front of the 'fuhninate, a hoiding ring having an outer thread engaging the inner thread of the body and confining the primer member against the base of the body, and a pressure piece inserted within the ring in front of the primer member and having a rupturable connection with the ring.

5. A pressure fuse for projectiles, mines, torpedoes, etc, comprising a primer member carrying aseries of hook-shaped pins. a body adapted to carry a fulminate, means to hold the primer member in position to cause the pointsof said pins to extend in frontof said fulminate, and means adapted 'upon impact to force said pins into said fuhninat-e. v

-6. A pressure fuse for projectiles, mines, torpedoes, etc., comprising a primer member consisting of. a rim, arms, extending inward [1mm the rim and hook shaped pinseXtendmg inward from said rim; a body having a dientral recess to receive a fulminate, said primer member adapted to overlie, said body and the arms thereof to confine the tulminate in place, means to hold' the primer member in position, and means adapted upon impact to force said pins backward into the fuhninate in the recess.

7. A pressure fuse for projectiles, mines, torpedoes, etc., comprising a body, a fulminate carried thereby, a series of priming pins whose points extend obliquely toward the fulminate and converge relatively to each other, and apressure piece in front of said pins having a rupt-urabie connection with said body and adapted when actuated to force said pins into said fulnn'nate.

A pressure fuse for projectiles, mines, torpedoes, etc., comprising a on -shaped body having an inner thread, a ulminate carried in the base of the body,'a primer member within the body, composed of a rim, inwardly extending arms and hook-shaped pins, a holding ring having an outer thread" engaging the inner threadof thebody and confining the primer member against the base of the body, and a pressure piece inserted within the ring in front of the primer member and-having a rupturabie connection v with the ring. 1

In testimony of which invent-ion, I have hereunto set my hand, at Hamburg, on this 19th day of Sept, 1911.-

ERNST SOKOLOWVSKI,

\Vitnesses ERNEST H. L. MUMMEm-mrr, ANDREW W. PEN'rLANo. 

